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Signing, Singing, Speaking: How Language Evolved

07:47
Alex, the famous African gray parrot, learned elements of the English language and shattered the notion that parrots are only capable of mimicking words. Scientists believe human language may have evolved from hand signals and song. (NPR)
Alex, the famous African gray parrot, learned elements of the English language and shattered the notion that parrots are only capable of mimicking words. Scientists believe human language may have evolved from hand signals and song. (NPR)

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